The top seeds here are a trio of current and/or former world No. 1s -- the
aforementioned Williams, Victoria Azarenka and last week's Indian Wells
champion Maria Sharapova.

The reigning Wimbledon and U.S. Open titlist Williams is a five-time Miami
champ, while the Aussie Open champion Azarenka titled here in 2009 and 2011
and the French Open queen Sharapova was last year's Miami runner-up to
Radwanska. Sharapova has lost in the last two finals at this Premier Mandatory
WTA event.